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Sol- Gel Technology. Aytan Muradova. Introduction. Hydrolyses Polymerization Growth of nanostructures Agglomeration. The prime requisite for obtaining good quality in this technology. Variation of PH Temperature Time Concentration of Reagent Concentration of Catalyzor H2O/Si

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Sol gel technology l.jpg

Sol- Gel Technology

Aytan Muradova


Introduction l.jpg
Introduction

  • Hydrolyses

  • Polymerization

  • Growth of nanostructures

  • Agglomeration


The prime requisite for obtaining good quality in this technology l.jpg
The prime requisite for obtaining good quality in this technology

  • Variation of PH

  • Temperature

  • Time

  • Concentration of Reagent

  • Concentration of Catalyzor

  • H2O/Si

  • Phase transition Sol Gel

  • Drying


Sol gel processing l.jpg
Sol- Gel Processing technology

RO Me or Me salt

+H2O Stabilizer

Nanodisperse Oxide Sol

(Particulate or Polymeric)

-H2O

Gel

-H2O

Xerogel

T > 400 C

-H2O

-Stabilizer

Porous Oxide


For example l.jpg

Sol technology

For example

aerosol

Homogeneous mixture

With diameter20-50nm

Nitration with NaOH

Drying

Nitration with NH4OH

Gel

Annealing with 600- 1000 C

Xerogel

Adding (CuNO3)2

Dryingin air

Drying with H in 1200 C and 1atm

Glass of Nanoparticles


Preparation of thin films l.jpg
Preparation of thin films technology

  • RO3=Si-OR + H2O

    (RO)3=Si-O-Si+ R-OH (Hydrolyses)

  • (RO)3=Si-OH+(RO)3=Si-OR

    (RO)3=Si-OSi=(RO)3+ ROH

  • (RO)3=Si-OH+HO-Si+(RO)3

    (RO)3+Si-O-Si=(RO)3+H2O



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